Air-ventilating insole

ABSTRACT

An air-ventilating insole comprises an upper insole; a center of the upper insole being formed with a receiving groove; a heel portion of the upper insole being formed with a plurality of air inlets and a front thenar portion of the upper insole being formed with a plurality of air outlets; a lower insole located below the upper insole; an air chamber being formed; a plurality of spiral springs installed between the upper insole and lower insole; each spiral spring being formed as a truncated cone and further as the spiral spring is compressed to be on a same plane; one end of the spiral spring being formed with a U shape positioning end which is embedded into a respective U shape positioning slot of the upper insole; and a ventilating layer stuck above the upper insole at a position for contacting the bottom of the leg.

FIELD OF THE INVENTION

The present invention relates to insoles, and particular to anair-ventilating insole, wherein a plurality of spiral springs aredistributed in an air chamber between an upper insole and a lower insoleso as to have a preferred stability. Thereby, the insole has preferredarrangement of the air ventilating holes so that the shoe with theinsole of the present invention can have preferred air ventilationeffect.

BACKGROUND OF THE INVENTION

In the prior art shoe with air ventilating function has pumps or airbagsor check valves or air guide tubes, etc. in the sole of the shoe forcontrolling air to flow unidirectionally. Since these devices have alarger volume, if they are installed in a shoe, other than the strengthof the shoe being reduced, the user will feel uneasy. Thereby, the shoecannot be washed in water.

To improve above mentioned defects, in U.S. patent Ser. No. 10/647,571,assigned to the inventor of the present invention, an air-ventilatinginsole is developed which can be placed in a shoe so as to have apreferred effect with a lower cost. In the prior arts, a plurality ofspiral springs with smaller size are used. In the prior art, the spiralsprings have a lateral round positioning ends. No positioning slots isformed. Thereby, the spiral springs will swing and vibrate so as toaffect the air exchange function. Furthermore, the adhering structure bythe upper insole, lower insole, and rubber strips to form an air chamberis easy to detach or destroyed so that air vents out.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to providean air-ventilating insole, wherein the air outlets face upwards. It canbe used in cold weather. If it is cold or no ventilation effect isnecessary, the insole can be upside down and the left insole isexchanged with the right insole so that the air outlets face downward.As a result air in the air chamber is hindered in the air chamber. Thusthe air chamber is used as an air inflation pad which has the effect ofsoftness and protection.

To achieve above objects, the present invention provides anair-ventilating insole comprises an upper insole; a center of the upperinsole being formed with a receiving groove; an enclosing frameenclosing the receiving groove; a plurality of U shape positioning slotsbeing formed on the enclosing frame; a heel portion of the upper insolebeing formed with a plurality of air inlets and a front thenar portionof the upper insole being formed with a plurality of air outlets; alower insole located below the upper insole; an air chamber beingformed; a plurality of spiral springs installed between the upper insoleand lower insole; the spiral springs being installed to the U shapepositioning slots of the enclosing frame; each spiral spring beingformed as a truncated cone and further as the spiral spring iscompressed to be on a same plane; one end of the spiral spring beingformed with a U shape positioning end which is embedded into arespective U shape positioning slot of the upper insole; a ventilatinglayer stuck above the upper insole at a position for contacting thebottom of the leg; a plurality of air input holes being formed in theventilating layer, which are communicated to the air inlets. When theheel presses upon the insoles, the air inlets of the upper insole andthe air input holes of the ventilating layer will compress air in theair chamber so as to flow upward to the front thenar portion of theuser's leg.

Moreover, in the present invention, if it is cold or no ventilationeffect is necessary, the insole can be upside down and the left insoleis exchanged with the right insole so that the air outlets facedownward. As a result air in the air chamber is hindered in the airchamber. Thus the air chamber is used as an air inflation pad which hasthe effect of softness and protection.

The various objects and advantages of the present invention will be morereadily understood from the following detailed description when read inconjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is an assembled perspective view of the present invention.

FIG. 3 is a plane schematic view of the present invention showing thetreading operation of the present invention.

FIG. 4 is a plane cross section view showing the state that the leg isleft from ground.

FIG. 5 shows the second embodiment of the present invention.

FIG. 6 shows the third embodiment of the present invention.

FIG. 7 shows one application of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand thepresent invention, a description will be described in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims.

Referring to FIGS. 1 and 2, the structure of the present invention isillustrated. The insole 1 of present invention includes the followingelements.

An upper insole 11 is included. A center of the upper insole 11 isformed with a receiving groove 111. An enclosing frame 112 encloses thereceiving groove 111. A plurality of U shape positioning slots 113 areformed on the enclosing frame 112. A heel portion of the upper insole 11is formed with a plurality of air inlets 114 and a front thenar portionof the upper insole 11 is formed with a plurality of air outlets 115

A lower insole 12 is located below the upper insole 11. An air chamber Sis formed by the upper insole 11 and lower insole 12.

A plurality of spiral springs 14 are installed between the upper insole11 and lower insole 12. The spiral springs 14 are installed to the Ushape positioning slots 113 of the enclosing frame 112. Each spiralspring 14 has an upper plane and a lower plane a plurality of coils arewound between the upper plane and a lower plane. Thereby, the spiralspring 14 are formed as a truncated cone and further the spiral spring14 can be compressed to be on a same plane. One end of the spiral spring14 is formed with a U shape positioning end 141 which is embedded into arespective U shape positioning slot 113 of the upper insole 11 as theupper insole 11 and the lower insole 12 are adhered together. Thereby,the U shape positioning end 141 can be used to position the orientationof the spiral spring 14 so as to have the effect of enhancing thestructure of the insole.

A ventilating layer 13 is stuck above the upper insole 11 at a positionfor contacting the bottom of the leg. A plurality of air input holes 131are formed in the ventilating layer 13, which are communicated to theair inlets 114, but no air output holes are formed on the front thenarportion of the ventilating layer 13 for communicating the air outlets115 of the upper insole 11. When the heel presses upon the insoles, theair inlets 114 of the upper insole 11 and the air input holes 131 of theventilating layer 13 will compress air in the air chamber S so as toflow upward to the front thenar portion of the user's leg.

Referring to FIGS. 3 and 4, when the user wearing the shoe with theinsole of the present invention walks, the heel of user treads upon theinsole, the air input holes 131 of the ventilating layer 13 and the airinlets 114 of the upper insole 11 are pressed by the heel so that theair in the air chamber S is compressed to flow out from the air outlets115 of the upper insole 11 and the ventilating layer 13 to disperse inbetween the front thenar portion. When the leg of the user lifts, theair chamber S is restored by the resilient force of the spiral springs14 so as to drive the external air to flow into the air input holes 131of the ventilating layer 13 and the air inlets 114 of the upper insole11. Therefore, since no air output hole is formed at the ventilatinglayer 13 corresponding to the front thenar portion, the compressed airwill not easily flow into the air chamber S. Thereby, air flowsunidirectionally. Thus the air chamber S has saturated cool air.

By the continuous treading actions, air within the shoe and external theshoe displace continuously so that the wet and hot air in the shoe canbe ventilated preferably.

Referring to FIG. 5, another embodiment of the present invention isillustrated. The air-ventilating insole 1A: A ventilating layer 13Aadhered to a front end of the receiving groove 111A of the upper insole11A; so as to cover the air outlets 115 of the upper insole 11A, nospiral springs are installed upon the ventilating layer 13A; a pluralityof spiral springs 14 are installed in the heel portion of the receivinggroove 111A of the upper insole 11A. a leather layer or cloth layer 13Bbeing adhered to the upper insole 11A; the leather layer or cloth layer13B being formed with a plurality of air input holes 131 and air outputholes 132 which are communicable to the air inlets 114 and air outlets115 of the upper insole 11A.

As shown in FIG. 6, the third embodiment of the present invention isillustrated. A front end of the receiving groove 111 of the upper insole11 is adhered with a ventilating layer 13A which only covers the fronthalf of the insole 1 so as to cover the air outlets 115 of the upperinsole 11. A plurality of spiral springs 14 are installed upon theventilating layer 13A. so that the air out of the air chamber S of theupper insole 11 will not easily return to the air chamber S. Thus airflows unidirectionally. a plurality of spiral springs 14 are installedin the heel portion of the receiving groove 111 of the upper insole 11 Aleather layer 15 (or cloth layer) is adhered to the upper insole 11. Theleather layer or cloth layer 15 is formed with a plurality of air inputholes 151 and air output holes 152 which are communicable to the airinlets 114 and air outlets 115 of the upper insole 11 so that cool airis filled in the air chamber S at any time for air ventilation.

Thereby, not only the treading force of heel can be buffered so that theshock of the heel is reduced, but also the wet and hot air within theshoe can circularly flow with external cool air to have a preferred airventilation effect so as to avoid the effect of infection of bacteria orperspiration or getting foot tinea.

The advantages of the present invention will be described herein.

Since the spiral spring 14 has U shape positioning end 141 to bepositioned to the U shape positioning slot 113 of the enclosing frame112 of the upper insole 11, by the U shape structure of the U shapepositioning end 141, the U shape positioning end 141 embedded into theenclosing frame 112 of the upper insole 11 can be used to determine theorientation of the spiral spring 14 to prevent the displacement of thespiral spring 14.

The material of the insole 1 is simple without any check valve or airguide tube. When the spiral springs 14 are compressed, the spiralsprings 14 will be disposed at the same plane so that it is light andthin. Thus the user will feel comfortable.

The air chamber S within the insole 1 can contain more air so that airventilation amount is great, which is suitable for leather shoes, clothshoes, and other shoes. The insole 1 can be taken out easily.

A plurality of small size spiral springs 14 are used to replace a greatspiral spring so that elastic force can be dispersed and a greatresilient force generates. When the insole is pressed, it can restoreeasily so as to assure that air is saturated in the air chamber and theinsole 1 will no bend to destroy the structure thereof.

The hot and wet air within the shoe can be displaced with external coolair so as to avoid the effect of infection of bacteria or perspirationor getting foot tinea. Furthermore, the force applied to the sole can bebuffered and have the effect of shock absorption.

Referring to FIG. 7, if it is cold or no ventilation effect isnecessary, the insole 1 can be upside down and the left insole isexchanged with the right insole (see FIG. 3) so that the air outlets 115face downwards. As a result air in the air chamber S is hindered in theair chamber S. Thus the air chamber S is used as an air inflation padwhich has the effect of softness and protection.

The present invention is thus described, it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the present invention, andall such modifications as would be obvious to one skilled in the art areintended to be included within the scope of the following claims.

1. An air-ventilating insole comprising: an upper insole; a center ofthe upper insole being formed with a receiving groove; an enclosingframe enclosing the receiving groove; a plurality of U shape positioningslots being formed on the enclosing frame; a heel portion of the upperinsole being formed with a plurality of air inlets and a front thenarportion of the upper insole being formed with a plurality of airoutlets; a lower insole located below the upper insole; an air chamberbeing formed by the upper insole and lower insole; a plurality of spiralsprings installed between the upper insole and lower insole; the spiralsprings being installed to the U shape positioning slots of theenclosing frame; each spiral spring having an upper plane and a lowerplane; a plurality of coils being wound between the upper plane and alower plane; thereby, the spiral spring being formed as a truncated coneand further as the spiral spring is compressed to be on a same plane;one end of the spiral spring being formed with a U shape positioning endwhich is embedded into a respective U shape positioning slot of theupper insole as the upper insole and the lower insole are adheredtogether; thereby, the U shape positioning end is used to position theorientation of the spiral spring; a ventilating layer stuck above theupper insole at a position for contacting the bottom of the leg; aplurality of air input holes being formed in the ventilating layer,which are communicated to the air inlets, but no air output holes areformed on the front thenar portion of the ventilating layer forcommunicating the air outlets of the upper insole; when the heel pressesupon the insoles, the air inlets of the upper insole and the air inputholes of the ventilating layer will compress air in the air chamber soas to flow upward to the front thenar portion of the user's leg.
 2. Theair-ventilating insole as claimed in claim 1, a ventilating layeradhered to a front end of the receiving groove of the upper insole; soas to cover the air outlets of the upper insole, no spiral springs areinstalled upon the ventilating layer; a plurality of spiral springs areinstalled in the heel portion of the receiving groove of the upperinsole. a leather layer or cloth layer being adhered to the upperinsole; the leather layer or cloth layer being formed with a pluralityof air input holes and air output holes which are communicable to theair inlets and air outlets of the upper insole
 3. The air-ventilatinginsole as claimed in claim 2, a ventilating layer adhered to a front endof the receiving groove of the upper insole; so as to cover the airoutlets of the upper insole, some of the spiral springs are installedupon the ventilating layer; a plurality of spiral springs are installedin the heel portion of the receiving groove of the upper insole. aleather layer or cloth layer being adhered to the upper insole; theleather layer or cloth layer being formed with a plurality of air inputholes and air output holes which are communicable to the air inlets andair outlets of the upper insole